for all functions \(f\)  and \(g\)  integrable on \(A.\)  See [1]},
Theorem \(6.3\), p. 75. In addition, the
following two integral analogs of the modulus inequality hold true:
\(|(\operatornamewithlimits{C})\int _{A}f\mathrm {d}\mu |\le (\operatornamewithlimits{C})\int _{A}|f|\mathrm {d}\mu \) 
